2 * generic-sharing.c: Support functions for generic sharing.
5 * Mark Probst (mark.probst@gmail.com)
7 * Copyright 2007-2011 Novell, Inc (http://www.novell.com)
8 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
13 #include <mono/metadata/class.h>
14 #include <mono/utils/mono-counters.h>
18 #define ALLOW_PARTIAL_SHARING TRUE
19 //#define ALLOW_PARTIAL_SHARING FALSE
22 #define DEBUG(...) __VA_ARGS__
28 mono_class_unregister_image_generic_subclasses (MonoImage *image, gpointer user_data);
30 static gboolean partial_supported = FALSE;
32 static inline gboolean
33 partial_sharing_supported (void)
35 if (!ALLOW_PARTIAL_SHARING)
37 /* Enable this when AOT compiling or running in full-aot mode */
40 if (partial_supported)
46 type_check_context_used (MonoType *type, gboolean recursive)
48 switch (mono_type_get_type (type)) {
50 return MONO_GENERIC_CONTEXT_USED_CLASS;
52 return MONO_GENERIC_CONTEXT_USED_METHOD;
53 case MONO_TYPE_SZARRAY:
54 return mono_class_check_context_used (mono_type_get_class (type));
56 return mono_class_check_context_used (mono_type_get_array_type (type)->eklass);
59 return mono_class_check_context_used (mono_type_get_class (type));
62 case MONO_TYPE_GENERICINST:
64 MonoGenericClass *gclass = type->data.generic_class;
66 g_assert (gclass->container_class->generic_container);
67 return mono_generic_context_check_used (&gclass->context);
77 inst_check_context_used (MonoGenericInst *inst)
85 for (i = 0; i < inst->type_argc; ++i)
86 context_used |= type_check_context_used (inst->type_argv [i], TRUE);
92 * mono_generic_context_check_used:
93 * @context: a generic context
95 * Checks whether the context uses a type variable. Returns an int
96 * with the bit MONO_GENERIC_CONTEXT_USED_CLASS set to reflect whether
97 * the context's class instantiation uses type variables.
100 mono_generic_context_check_used (MonoGenericContext *context)
102 int context_used = 0;
104 context_used |= inst_check_context_used (context->class_inst);
105 context_used |= inst_check_context_used (context->method_inst);
111 * mono_class_check_context_used:
114 * Checks whether the class's generic context uses a type variable.
115 * Returns an int with the bit MONO_GENERIC_CONTEXT_USED_CLASS set to
116 * reflect whether the context's class instantiation uses type
120 mono_class_check_context_used (MonoClass *klass)
122 int context_used = 0;
124 context_used |= type_check_context_used (&klass->this_arg, FALSE);
125 context_used |= type_check_context_used (&klass->byval_arg, FALSE);
127 if (klass->generic_class)
128 context_used |= mono_generic_context_check_used (&klass->generic_class->context);
129 else if (klass->generic_container)
130 context_used |= mono_generic_context_check_used (&klass->generic_container->context);
136 * LOCKING: loader lock
138 static MonoRuntimeGenericContextInfoTemplate*
139 get_info_templates (MonoRuntimeGenericContextTemplate *template, int type_argc)
141 g_assert (type_argc >= 0);
143 return template->infos;
144 return g_slist_nth_data (template->method_templates, type_argc - 1);
148 * LOCKING: loader lock
151 set_info_templates (MonoImage *image, MonoRuntimeGenericContextTemplate *template, int type_argc,
152 MonoRuntimeGenericContextInfoTemplate *oti)
154 g_assert (type_argc >= 0);
156 template->infos = oti;
158 int length = g_slist_length (template->method_templates);
161 /* FIXME: quadratic! */
162 while (length < type_argc) {
163 template->method_templates = g_slist_append_image (image, template->method_templates, NULL);
167 list = g_slist_nth (template->method_templates, type_argc - 1);
174 * LOCKING: loader lock
177 template_get_max_argc (MonoRuntimeGenericContextTemplate *template)
179 return g_slist_length (template->method_templates);
183 * LOCKING: loader lock
185 static MonoRuntimeGenericContextInfoTemplate*
186 rgctx_template_get_other_slot (MonoRuntimeGenericContextTemplate *template, int type_argc, int slot)
189 MonoRuntimeGenericContextInfoTemplate *oti;
191 g_assert (slot >= 0);
193 for (oti = get_info_templates (template, type_argc), i = 0; i < slot; oti = oti->next, ++i) {
202 * LOCKING: loader lock
205 rgctx_template_num_infos (MonoRuntimeGenericContextTemplate *template, int type_argc)
207 MonoRuntimeGenericContextInfoTemplate *oti;
210 for (i = 0, oti = get_info_templates (template, type_argc); oti; ++i, oti = oti->next)
216 /* Maps from uninstantiated generic classes to GList's of
217 * uninstantiated generic classes whose parent is the key class or an
218 * instance of the key class.
220 * LOCKING: loader lock
222 static GHashTable *generic_subclass_hash;
225 * LOCKING: templates lock
228 class_set_rgctx_template (MonoClass *klass, MonoRuntimeGenericContextTemplate *rgctx_template)
230 if (!klass->image->rgctx_template_hash)
231 klass->image->rgctx_template_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
233 g_hash_table_insert (klass->image->rgctx_template_hash, klass, rgctx_template);
237 * LOCKING: loader lock
239 static MonoRuntimeGenericContextTemplate*
240 class_lookup_rgctx_template (MonoClass *klass)
242 MonoRuntimeGenericContextTemplate *template;
244 if (!klass->image->rgctx_template_hash)
247 template = g_hash_table_lookup (klass->image->rgctx_template_hash, klass);
253 * LOCKING: loader lock
256 register_generic_subclass (MonoClass *klass)
258 MonoClass *parent = klass->parent;
260 MonoRuntimeGenericContextTemplate *rgctx_template = class_lookup_rgctx_template (klass);
262 g_assert (rgctx_template);
264 if (parent->generic_class)
265 parent = parent->generic_class->container_class;
267 if (!generic_subclass_hash)
268 generic_subclass_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
270 subclass = g_hash_table_lookup (generic_subclass_hash, parent);
271 rgctx_template->next_subclass = subclass;
272 g_hash_table_insert (generic_subclass_hash, parent, klass);
276 move_subclasses_not_in_image_foreach_func (MonoClass *klass, MonoClass *subclass, MonoImage *image)
280 if (klass->image == image) {
281 /* The parent class itself is in the image, so all the
282 subclasses must be in the image, too. If not,
283 we're removing an image containing a class which
284 still has a subclass in another image. */
287 g_assert (subclass->image == image);
288 subclass = class_lookup_rgctx_template (subclass)->next_subclass;
296 MonoRuntimeGenericContextTemplate *subclass_template = class_lookup_rgctx_template (subclass);
297 MonoClass *next = subclass_template->next_subclass;
299 if (subclass->image != image) {
300 subclass_template->next_subclass = new_list;
308 g_hash_table_insert (generic_subclass_hash, klass, new_list);
312 * mono_class_unregister_image_generic_subclasses:
315 * Removes all classes of the image from the generic subclass hash.
316 * Must be called when an image is unloaded.
319 mono_class_unregister_image_generic_subclasses (MonoImage *image, gpointer user_data)
321 GHashTable *old_hash;
323 //g_print ("unregistering image %s\n", image->name);
325 if (!generic_subclass_hash)
330 old_hash = generic_subclass_hash;
331 generic_subclass_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
333 g_hash_table_foreach (old_hash, (GHFunc)move_subclasses_not_in_image_foreach_func, image);
335 mono_loader_unlock ();
337 g_hash_table_destroy (old_hash);
340 static MonoRuntimeGenericContextTemplate*
341 alloc_template (MonoClass *klass)
343 static gboolean inited = FALSE;
344 static int num_allocted = 0;
345 static int num_bytes = 0;
347 int size = sizeof (MonoRuntimeGenericContextTemplate);
350 mono_counters_register ("RGCTX template num allocted", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_allocted);
351 mono_counters_register ("RGCTX template bytes allocted", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_bytes);
358 return mono_image_alloc0 (klass->image, size);
361 static MonoRuntimeGenericContextInfoTemplate*
362 alloc_oti (MonoImage *image)
364 static gboolean inited = FALSE;
365 static int num_allocted = 0;
366 static int num_bytes = 0;
368 int size = sizeof (MonoRuntimeGenericContextInfoTemplate);
371 mono_counters_register ("RGCTX oti num allocted", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_allocted);
372 mono_counters_register ("RGCTX oti bytes allocted", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_bytes);
379 return mono_image_alloc0 (image, size);
382 #define MONO_RGCTX_SLOT_USED_MARKER ((gpointer)&mono_defaults.object_class->byval_arg)
385 * Return true if this info type has the notion of identify.
387 * Some info types expect that each insert results in a new slot been assigned.
390 info_has_identity (MonoRgctxInfoType info_type)
392 return info_type != MONO_RGCTX_INFO_CAST_CACHE;
396 * LOCKING: loader lock
399 rgctx_template_set_slot (MonoImage *image, MonoRuntimeGenericContextTemplate *template, int type_argc,
400 int slot, gpointer data, MonoRgctxInfoType info_type)
402 static gboolean inited = FALSE;
403 static int num_markers = 0;
404 static int num_data = 0;
407 MonoRuntimeGenericContextInfoTemplate *list = get_info_templates (template, type_argc);
408 MonoRuntimeGenericContextInfoTemplate **oti = &list;
411 mono_counters_register ("RGCTX oti num markers", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_markers);
412 mono_counters_register ("RGCTX oti num data", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_data);
416 g_assert (slot >= 0);
424 *oti = alloc_oti (image);
428 g_assert (!(*oti)->data);
430 (*oti)->info_type = info_type;
432 set_info_templates (image, template, type_argc, list);
434 if (data == MONO_RGCTX_SLOT_USED_MARKER)
441 * mono_method_get_declaring_generic_method:
442 * @method: an inflated method
444 * Returns an inflated method's declaring method.
447 mono_method_get_declaring_generic_method (MonoMethod *method)
449 MonoMethodInflated *inflated;
451 g_assert (method->is_inflated);
453 inflated = (MonoMethodInflated*)method;
455 return inflated->declaring;
459 * mono_class_get_method_generic:
463 * Given a class and a generic method, which has to be of an
464 * instantiation of the same class that klass is an instantiation of,
465 * returns the corresponding method in klass. Example:
467 * klass is Gen<string>
468 * method is Gen<object>.work<int>
470 * returns: Gen<string>.work<int>
473 mono_class_get_method_generic (MonoClass *klass, MonoMethod *method)
475 MonoMethod *declaring, *m;
478 if (method->is_inflated)
479 declaring = mono_method_get_declaring_generic_method (method);
484 if (klass->generic_class)
485 m = mono_class_get_inflated_method (klass, declaring);
488 mono_class_setup_methods (klass);
489 if (klass->exception_type)
491 for (i = 0; i < klass->method.count; ++i) {
492 m = klass->methods [i];
495 if (m->is_inflated && mono_method_get_declaring_generic_method (m) == declaring)
498 if (i >= klass->method.count)
502 if (method != declaring) {
504 MonoGenericContext context;
506 context.class_inst = NULL;
507 context.method_inst = mono_method_get_context (method)->method_inst;
509 m = mono_class_inflate_generic_method_checked (m, &context, &error);
510 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
517 inflate_info (MonoRuntimeGenericContextInfoTemplate *oti, MonoGenericContext *context, MonoClass *klass, gboolean temporary)
519 gpointer data = oti->data;
520 MonoRgctxInfoType info_type = oti->info_type;
525 if (data == MONO_RGCTX_SLOT_USED_MARKER)
526 return MONO_RGCTX_SLOT_USED_MARKER;
530 case MONO_RGCTX_INFO_STATIC_DATA:
531 case MONO_RGCTX_INFO_KLASS:
532 case MONO_RGCTX_INFO_ELEMENT_KLASS:
533 case MONO_RGCTX_INFO_VTABLE:
534 case MONO_RGCTX_INFO_TYPE:
535 case MONO_RGCTX_INFO_REFLECTION_TYPE:
536 case MONO_RGCTX_INFO_CAST_CACHE:
537 case MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE:
538 case MONO_RGCTX_INFO_VALUE_SIZE:
539 case MONO_RGCTX_INFO_CLASS_BOX_TYPE:
540 case MONO_RGCTX_INFO_MEMCPY:
541 case MONO_RGCTX_INFO_BZERO:
542 case MONO_RGCTX_INFO_LOCAL_OFFSET:
543 case MONO_RGCTX_INFO_NULLABLE_CLASS_BOX:
544 case MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX: {
545 gpointer result = mono_class_inflate_generic_type_with_mempool (temporary ? NULL : klass->image,
546 data, context, &error);
547 g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
551 case MONO_RGCTX_INFO_METHOD:
552 case MONO_RGCTX_INFO_GENERIC_METHOD_CODE:
553 case MONO_RGCTX_INFO_METHOD_RGCTX:
554 case MONO_RGCTX_INFO_METHOD_CONTEXT:
555 case MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK:
556 case MONO_RGCTX_INFO_METHOD_DELEGATE_CODE: {
557 MonoMethod *method = data;
558 MonoMethod *inflated_method;
559 MonoType *inflated_type = mono_class_inflate_generic_type (&method->klass->byval_arg, context);
560 MonoClass *inflated_class = mono_class_from_mono_type (inflated_type);
562 mono_metadata_free_type (inflated_type);
564 mono_class_init (inflated_class);
566 g_assert (!method->wrapper_type);
568 if (inflated_class->byval_arg.type == MONO_TYPE_ARRAY ||
569 inflated_class->byval_arg.type == MONO_TYPE_SZARRAY) {
570 inflated_method = mono_method_search_in_array_class (inflated_class,
571 method->name, method->signature);
574 inflated_method = mono_class_inflate_generic_method_checked (method, context, &error);
575 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
577 mono_class_init (inflated_method->klass);
578 g_assert (inflated_method->klass == inflated_class);
579 return inflated_method;
581 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO: {
582 MonoGSharedVtMethodInfo *oinfo = data;
583 MonoGSharedVtMethodInfo *res;
584 MonoDomain *domain = mono_domain_get ();
587 res = mono_domain_alloc0 (domain, sizeof (MonoGSharedVtMethodInfo));
589 res->nlocals = info->nlocals;
590 res->locals_types = g_new0 (MonoType*, info->nlocals);
591 for (i = 0; i < info->nlocals; ++i)
592 res->locals_types [i] = mono_class_inflate_generic_type (info->locals_types [i], context);
594 res->num_entries = oinfo->num_entries;
595 res->entries = mono_domain_alloc0 (domain, sizeof (MonoRuntimeGenericContextInfoTemplate) * oinfo->num_entries);
596 for (i = 0; i < oinfo->num_entries; ++i) {
597 MonoRuntimeGenericContextInfoTemplate *otemplate = &oinfo->entries [i];
598 MonoRuntimeGenericContextInfoTemplate *template = &res->entries [i];
600 memcpy (template, otemplate, sizeof (MonoRuntimeGenericContextInfoTemplate));
601 template->data = inflate_info (template, context, klass, FALSE);
605 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE:
606 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT: {
607 MonoJumpInfoGSharedVtCall *info = data;
608 MonoMethod *method = info->method;
609 MonoMethod *inflated_method;
610 MonoType *inflated_type = mono_class_inflate_generic_type (&method->klass->byval_arg, context);
611 MonoClass *inflated_class = mono_class_from_mono_type (inflated_type);
612 MonoJumpInfoGSharedVtCall *res;
613 MonoDomain *domain = mono_domain_get ();
615 res = mono_domain_alloc0 (domain, sizeof (MonoJumpInfoGSharedVtCall));
616 /* Keep the original signature */
617 res->sig = info->sig;
619 mono_metadata_free_type (inflated_type);
621 mono_class_init (inflated_class);
623 g_assert (!method->wrapper_type);
625 if (inflated_class->byval_arg.type == MONO_TYPE_ARRAY ||
626 inflated_class->byval_arg.type == MONO_TYPE_SZARRAY) {
627 inflated_method = mono_method_search_in_array_class (inflated_class,
628 method->name, method->signature);
631 inflated_method = mono_class_inflate_generic_method_checked (method, context, &error);
632 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
634 mono_class_init (inflated_method->klass);
635 g_assert (inflated_method->klass == inflated_class);
636 res->method = inflated_method;
641 case MONO_RGCTX_INFO_CLASS_FIELD:
642 case MONO_RGCTX_INFO_FIELD_OFFSET: {
643 MonoClassField *field = data;
644 MonoType *inflated_type = mono_class_inflate_generic_type (&field->parent->byval_arg, context);
645 MonoClass *inflated_class = mono_class_from_mono_type (inflated_type);
646 int i = field - field->parent->fields;
647 gpointer dummy = NULL;
649 mono_metadata_free_type (inflated_type);
651 mono_class_get_fields (inflated_class, &dummy);
652 g_assert (inflated_class->fields);
654 return &inflated_class->fields [i];
656 case MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI: {
657 MonoMethodSignature *sig = data;
658 MonoMethodSignature *isig;
661 isig = mono_inflate_generic_signature (sig, context, &error);
662 g_assert (mono_error_ok (&error));
665 case MONO_RGCTX_INFO_VIRT_METHOD_CODE:
666 case MONO_RGCTX_INFO_VIRT_METHOD_BOX_TYPE: {
667 MonoJumpInfoVirtMethod *info = data;
668 MonoJumpInfoVirtMethod *res;
670 MonoDomain *domain = mono_domain_get ();
674 res = mono_domain_alloc0 (domain, sizeof (MonoJumpInfoVirtMethod));
675 t = mono_class_inflate_generic_type (&info->klass->byval_arg, context);
676 res->klass = mono_class_from_mono_type (t);
677 mono_metadata_free_type (t);
679 res->method = mono_class_inflate_generic_method_checked (info->method, context, &error);
680 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
685 g_assert_not_reached ();
687 /* Not reached, quiet compiler */
692 free_inflated_info (MonoRgctxInfoType info_type, gpointer info)
698 case MONO_RGCTX_INFO_STATIC_DATA:
699 case MONO_RGCTX_INFO_KLASS:
700 case MONO_RGCTX_INFO_ELEMENT_KLASS:
701 case MONO_RGCTX_INFO_VTABLE:
702 case MONO_RGCTX_INFO_TYPE:
703 case MONO_RGCTX_INFO_REFLECTION_TYPE:
704 case MONO_RGCTX_INFO_CAST_CACHE:
705 mono_metadata_free_type (info);
712 static MonoRuntimeGenericContextInfoTemplate
713 class_get_rgctx_template_oti (MonoClass *klass, int type_argc, guint32 slot, gboolean temporary, gboolean shared, gboolean *do_free);
716 class_uninstantiated (MonoClass *klass)
718 if (klass->generic_class)
719 return klass->generic_class->container_class;
726 * Return the class used to store information when using generic sharing.
729 get_shared_class (MonoClass *klass)
731 return class_uninstantiated (klass);
735 * mono_class_get_runtime_generic_context_template:
738 * Looks up or constructs, if necessary, the runtime generic context template for class.
739 * The template is the same for all instantiations of a class.
741 static MonoRuntimeGenericContextTemplate*
742 mono_class_get_runtime_generic_context_template (MonoClass *klass)
744 MonoRuntimeGenericContextTemplate *parent_template, *template;
747 klass = get_shared_class (klass);
750 template = class_lookup_rgctx_template (klass);
751 mono_loader_unlock ();
756 //g_assert (get_shared_class (class) == class);
758 template = alloc_template (klass);
764 int max_argc, type_argc;
766 parent_template = mono_class_get_runtime_generic_context_template (klass->parent);
767 max_argc = template_get_max_argc (parent_template);
769 for (type_argc = 0; type_argc <= max_argc; ++type_argc) {
770 num_entries = rgctx_template_num_infos (parent_template, type_argc);
772 /* FIXME: quadratic! */
773 for (i = 0; i < num_entries; ++i) {
774 MonoRuntimeGenericContextInfoTemplate oti;
776 oti = class_get_rgctx_template_oti (klass->parent, type_argc, i, FALSE, FALSE, NULL);
777 if (oti.data && oti.data != MONO_RGCTX_SLOT_USED_MARKER) {
778 rgctx_template_set_slot (klass->image, template, type_argc, i,
779 oti.data, oti.info_type);
785 if (class_lookup_rgctx_template (klass)) {
786 /* some other thread already set the template */
787 template = class_lookup_rgctx_template (klass);
789 class_set_rgctx_template (klass, template);
792 register_generic_subclass (klass);
795 mono_loader_unlock ();
801 * class_get_rgctx_template_oti:
803 * Return the info template of CLASS numbered TYPE_ARGC/SLOT.
804 * temporary signifies whether the inflated info (oti.data) will be
805 * used temporarily, in which case it might be heap-allocated, or
806 * permanently, in which case it will be mempool-allocated. If
807 * temporary is set then *do_free will return whether the returned
808 * data must be freed.
810 * LOCKING: loader lock
812 static MonoRuntimeGenericContextInfoTemplate
813 class_get_rgctx_template_oti (MonoClass *klass, int type_argc, guint32 slot, gboolean temporary, gboolean shared, gboolean *do_free)
815 g_assert ((temporary && do_free) || (!temporary && !do_free));
817 DEBUG (printf ("get slot: %s %d\n", mono_type_full_name (&class->byval_arg), slot));
819 if (klass->generic_class && !shared) {
820 MonoRuntimeGenericContextInfoTemplate oti;
821 gboolean tmp_do_free;
823 oti = class_get_rgctx_template_oti (klass->generic_class->container_class,
824 type_argc, slot, TRUE, FALSE, &tmp_do_free);
826 gpointer info = oti.data;
827 oti.data = inflate_info (&oti, &klass->generic_class->context, klass, temporary);
829 free_inflated_info (oti.info_type, info);
836 MonoRuntimeGenericContextTemplate *template;
837 MonoRuntimeGenericContextInfoTemplate *oti;
839 template = mono_class_get_runtime_generic_context_template (klass);
840 oti = rgctx_template_get_other_slot (template, type_argc, slot);
851 class_type_info (MonoDomain *domain, MonoClass *klass, MonoRgctxInfoType info_type)
854 case MONO_RGCTX_INFO_STATIC_DATA: {
855 MonoVTable *vtable = mono_class_vtable (domain, klass);
857 mono_raise_exception (mono_class_get_exception_for_failure (klass));
858 return mono_vtable_get_static_field_data (vtable);
860 case MONO_RGCTX_INFO_KLASS:
862 case MONO_RGCTX_INFO_ELEMENT_KLASS:
863 return klass->element_class;
864 case MONO_RGCTX_INFO_VTABLE: {
865 MonoVTable *vtable = mono_class_vtable (domain, klass);
867 mono_raise_exception (mono_class_get_exception_for_failure (klass));
870 case MONO_RGCTX_INFO_CAST_CACHE: {
871 /*First slot is the cache itself, the second the vtable.*/
872 gpointer **cache_data = mono_domain_alloc0 (domain, sizeof (gpointer) * 2);
873 cache_data [1] = (gpointer)klass;
876 case MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE:
877 return GUINT_TO_POINTER (mono_class_array_element_size (klass));
878 case MONO_RGCTX_INFO_VALUE_SIZE:
879 if (MONO_TYPE_IS_REFERENCE (&klass->byval_arg))
880 return GUINT_TO_POINTER (sizeof (gpointer));
882 return GUINT_TO_POINTER (mono_class_value_size (klass, NULL));
883 case MONO_RGCTX_INFO_CLASS_BOX_TYPE:
884 if (MONO_TYPE_IS_REFERENCE (&klass->byval_arg))
885 return GUINT_TO_POINTER (1);
886 else if (mono_class_is_nullable (klass))
887 return GUINT_TO_POINTER (2);
889 return GUINT_TO_POINTER (0);
890 case MONO_RGCTX_INFO_MEMCPY:
891 case MONO_RGCTX_INFO_BZERO: {
892 static MonoMethod *memcpy_method [17];
893 static MonoMethod *bzero_method [17];
894 MonoJitDomainInfo *domain_info;
898 domain_info = domain_jit_info (domain);
900 if (MONO_TYPE_IS_REFERENCE (&klass->byval_arg)) {
901 size = sizeof (gpointer);
902 align = sizeof (gpointer);
904 size = mono_class_value_size (klass, &align);
907 if (size != 1 && size != 2 && size != 4 && size != 8)
912 if (info_type == MONO_RGCTX_INFO_MEMCPY) {
913 if (!memcpy_method [size]) {
918 sprintf (name, "memcpy");
920 sprintf (name, "memcpy_aligned_%d", size);
921 m = mono_class_get_method_from_name (mono_defaults.string_class, name, 3);
923 mono_memory_barrier ();
924 memcpy_method [size] = m;
926 if (!domain_info->memcpy_addr [size]) {
927 gpointer addr = mono_compile_method (memcpy_method [size]);
928 mono_memory_barrier ();
929 domain_info->memcpy_addr [size] = addr;
931 return domain_info->memcpy_addr [size];
933 if (!bzero_method [size]) {
938 sprintf (name, "bzero");
940 sprintf (name, "bzero_aligned_%d", size);
941 m = mono_class_get_method_from_name (mono_defaults.string_class, name, 2);
943 mono_memory_barrier ();
944 bzero_method [size] = m;
946 if (!domain_info->bzero_addr [size]) {
947 gpointer addr = mono_compile_method (bzero_method [size]);
948 mono_memory_barrier ();
949 domain_info->bzero_addr [size] = addr;
951 return domain_info->bzero_addr [size];
954 case MONO_RGCTX_INFO_NULLABLE_CLASS_BOX:
955 case MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX: {
960 if (!mono_class_is_nullable (klass))
961 /* This can happen since all the entries in MonoGSharedVtMethodInfo are inflated, even those which are not used */
964 if (info_type == MONO_RGCTX_INFO_NULLABLE_CLASS_BOX)
965 method = mono_class_get_method_from_name (klass, "Box", 1);
967 method = mono_class_get_method_from_name (klass, "Unbox", 1);
969 addr = mono_compile_method (method);
970 // The caller uses the gsharedvt call signature
971 ji = mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (addr), NULL);
973 if (mini_jit_info_is_gsharedvt (ji))
974 return mono_create_static_rgctx_trampoline (method, addr);
976 MonoMethodSignature *sig, *gsig;
979 /* Need to add an out wrapper */
981 /* FIXME: We have no access to the gsharedvt signature/gsctx used by the caller, so have to construct it ourselves */
982 gmethod = mini_get_shared_method_full (method, FALSE, TRUE);
983 sig = mono_method_signature (method);
984 gsig = mono_method_signature (gmethod);
986 addr = mini_get_gsharedvt_wrapper (FALSE, addr, sig, gsig, -1, FALSE);
987 addr = mono_create_static_rgctx_trampoline (method, addr);
992 g_assert_not_reached ();
999 ji_is_gsharedvt (MonoJitInfo *ji)
1001 if (ji && ji->has_generic_jit_info && (mono_jit_info_get_generic_sharing_context (ji)->is_gsharedvt))
1008 * Describes the information used to construct a gsharedvt arg trampoline.
1013 gint32 vcall_offset;
1015 MonoMethodSignature *sig, *gsig;
1016 } GSharedVtTrampInfo;
1019 tramp_info_hash (gconstpointer key)
1021 GSharedVtTrampInfo *tramp = (gpointer)key;
1023 return (gsize)tramp->addr;
1027 tramp_info_equal (gconstpointer a, gconstpointer b)
1029 GSharedVtTrampInfo *tramp1 = (gpointer)a;
1030 GSharedVtTrampInfo *tramp2 = (gpointer)b;
1032 /* The signatures should be internalized */
1033 return tramp1->is_in == tramp2->is_in && tramp1->calli == tramp2->calli && tramp1->vcall_offset == tramp2->vcall_offset &&
1034 tramp1->addr == tramp2->addr && tramp1->sig == tramp2->sig && tramp1->gsig == tramp2->gsig;
1038 * mini_get_gsharedvt_wrapper:
1040 * Return a gsharedvt in/out wrapper for calling ADDR.
1043 mini_get_gsharedvt_wrapper (gboolean gsharedvt_in, gpointer addr, MonoMethodSignature *normal_sig, MonoMethodSignature *gsharedvt_sig, gint32 vcall_offset, gboolean calli)
1045 static gboolean inited = FALSE;
1046 static int num_trampolines;
1048 MonoDomain *domain = mono_domain_get ();
1049 MonoJitDomainInfo *domain_info;
1050 GSharedVtTrampInfo *tramp_info;
1051 GSharedVtTrampInfo tinfo;
1054 mono_counters_register ("GSHAREDVT arg trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines);
1058 memset (&tinfo, 0, sizeof (tinfo));
1059 tinfo.is_in = gsharedvt_in;
1060 tinfo.calli = calli;
1061 tinfo.vcall_offset = vcall_offset;
1063 tinfo.sig = normal_sig;
1064 tinfo.gsig = gsharedvt_sig;
1066 domain_info = domain_jit_info (domain);
1069 * The arg trampolines might only have a finite number in full-aot, so use a cache.
1071 mono_domain_lock (domain);
1072 if (!domain_info->gsharedvt_arg_tramp_hash)
1073 domain_info->gsharedvt_arg_tramp_hash = g_hash_table_new (tramp_info_hash, tramp_info_equal);
1074 res = g_hash_table_lookup (domain_info->gsharedvt_arg_tramp_hash, &tinfo);
1075 mono_domain_unlock (domain);
1079 info = mono_arch_get_gsharedvt_call_info (addr, normal_sig, gsharedvt_sig, gsharedvt_in, vcall_offset, calli);
1082 static gpointer tramp_addr;
1083 MonoMethod *wrapper;
1086 wrapper = mono_marshal_get_gsharedvt_in_wrapper ();
1087 addr = mono_compile_method (wrapper);
1088 mono_memory_barrier ();
1093 static gpointer tramp_addr;
1094 MonoMethod *wrapper;
1097 wrapper = mono_marshal_get_gsharedvt_out_wrapper ();
1098 addr = mono_compile_method (wrapper);
1099 mono_memory_barrier ();
1106 addr = mono_aot_get_gsharedvt_arg_trampoline (info, addr);
1108 addr = mono_arch_get_gsharedvt_arg_trampoline (mono_domain_get (), info, addr);
1113 tramp_info = mono_domain_alloc0 (domain, sizeof (GSharedVtTrampInfo));
1114 memcpy (tramp_info, &tinfo, sizeof (GSharedVtTrampInfo));
1116 mono_domain_lock (domain);
1117 /* Duplicates are not a problem */
1118 g_hash_table_insert (domain_info->gsharedvt_arg_tramp_hash, tramp_info, addr);
1119 mono_domain_unlock (domain);
1125 instantiate_info (MonoDomain *domain, MonoRuntimeGenericContextInfoTemplate *oti,
1126 MonoGenericContext *context, MonoClass *klass)
1134 switch (oti->info_type) {
1135 case MONO_RGCTX_INFO_STATIC_DATA:
1136 case MONO_RGCTX_INFO_KLASS:
1137 case MONO_RGCTX_INFO_ELEMENT_KLASS:
1138 case MONO_RGCTX_INFO_VTABLE:
1139 case MONO_RGCTX_INFO_CAST_CACHE:
1146 data = inflate_info (oti, context, klass, temporary);
1148 switch (oti->info_type) {
1149 case MONO_RGCTX_INFO_STATIC_DATA:
1150 case MONO_RGCTX_INFO_KLASS:
1151 case MONO_RGCTX_INFO_ELEMENT_KLASS:
1152 case MONO_RGCTX_INFO_VTABLE:
1153 case MONO_RGCTX_INFO_CAST_CACHE:
1154 case MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE:
1155 case MONO_RGCTX_INFO_VALUE_SIZE:
1156 case MONO_RGCTX_INFO_CLASS_BOX_TYPE:
1157 case MONO_RGCTX_INFO_MEMCPY:
1158 case MONO_RGCTX_INFO_BZERO:
1159 case MONO_RGCTX_INFO_NULLABLE_CLASS_BOX:
1160 case MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX: {
1161 MonoClass *arg_class = mono_class_from_mono_type (data);
1163 free_inflated_info (oti->info_type, data);
1164 g_assert (arg_class);
1166 /* The class might be used as an argument to
1167 mono_value_copy(), which requires that its GC
1168 descriptor has been computed. */
1169 if (oti->info_type == MONO_RGCTX_INFO_KLASS)
1170 mono_class_compute_gc_descriptor (arg_class);
1172 return class_type_info (domain, arg_class, oti->info_type);
1174 case MONO_RGCTX_INFO_TYPE:
1176 case MONO_RGCTX_INFO_REFLECTION_TYPE:
1177 return mono_type_get_object (domain, data);
1178 case MONO_RGCTX_INFO_METHOD:
1180 case MONO_RGCTX_INFO_GENERIC_METHOD_CODE: {
1183 addr = mono_compile_method (data);
1184 return mini_add_method_trampoline (data, addr, mono_method_needs_static_rgctx_invoke (data, FALSE), FALSE);
1186 case MONO_RGCTX_INFO_VIRT_METHOD_CODE: {
1187 MonoJumpInfoVirtMethod *info = data;
1188 MonoClass *iface_class = info->method->klass;
1194 mono_class_setup_vtable (info->klass);
1195 // FIXME: Check type load
1196 if (iface_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1197 ioffset = mono_class_interface_offset (info->klass, iface_class);
1198 g_assert (ioffset != -1);
1202 slot = mono_method_get_vtable_slot (info->method);
1203 g_assert (slot != -1);
1204 g_assert (info->klass->vtable);
1205 method = info->klass->vtable [ioffset + slot];
1207 method = mono_class_inflate_generic_method_checked (method, context, &error);
1209 addr = mono_compile_method (method);
1210 return mini_add_method_trampoline (method, addr, mono_method_needs_static_rgctx_invoke (method, FALSE), FALSE);
1212 case MONO_RGCTX_INFO_VIRT_METHOD_BOX_TYPE: {
1213 MonoJumpInfoVirtMethod *info = data;
1214 MonoClass *iface_class = info->method->klass;
1216 MonoClass *impl_class;
1219 mono_class_setup_vtable (info->klass);
1220 // FIXME: Check type load
1221 if (iface_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1222 ioffset = mono_class_interface_offset (info->klass, iface_class);
1223 g_assert (ioffset != -1);
1227 slot = mono_method_get_vtable_slot (info->method);
1228 g_assert (slot != -1);
1229 g_assert (info->klass->vtable);
1230 method = info->klass->vtable [ioffset + slot];
1232 impl_class = method->klass;
1233 if (MONO_TYPE_IS_REFERENCE (&impl_class->byval_arg))
1234 return GUINT_TO_POINTER (1);
1235 else if (mono_class_is_nullable (impl_class))
1236 return GUINT_TO_POINTER (2);
1238 return GUINT_TO_POINTER (0);
1240 #ifndef DISABLE_REMOTING
1241 case MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK:
1242 return mono_compile_method (mono_marshal_get_remoting_invoke_with_check (data));
1244 case MONO_RGCTX_INFO_METHOD_DELEGATE_CODE:
1245 return mono_domain_alloc0 (domain, sizeof (gpointer));
1246 case MONO_RGCTX_INFO_CLASS_FIELD:
1248 case MONO_RGCTX_INFO_FIELD_OFFSET: {
1249 MonoClassField *field = data;
1251 if (field->parent->valuetype && !(field->type->attrs & FIELD_ATTRIBUTE_STATIC))
1252 return GUINT_TO_POINTER (field->offset - sizeof (MonoObject));
1254 return GUINT_TO_POINTER (field->offset);
1256 case MONO_RGCTX_INFO_METHOD_RGCTX: {
1257 MonoMethodInflated *method = data;
1260 g_assert (method->method.method.is_inflated);
1261 g_assert (method->context.method_inst);
1263 vtable = mono_class_vtable (domain, method->method.method.klass);
1265 mono_raise_exception (mono_class_get_exception_for_failure (method->method.method.klass));
1267 return mono_method_lookup_rgctx (vtable, method->context.method_inst);
1269 case MONO_RGCTX_INFO_METHOD_CONTEXT: {
1270 MonoMethodInflated *method = data;
1272 g_assert (method->method.method.is_inflated);
1273 g_assert (method->context.method_inst);
1275 return method->context.method_inst;
1277 case MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI: {
1278 MonoMethodSignature *gsig = oti->data;
1279 MonoMethodSignature *sig = data;
1283 * This is an indirect call to the address passed by the caller in the rgctx reg.
1285 addr = mini_get_gsharedvt_wrapper (FALSE, NULL, sig, gsig, -1, TRUE);
1288 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE:
1289 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT: {
1290 MonoJumpInfoGSharedVtCall *call_info = data;
1291 MonoMethodSignature *call_sig;
1294 MonoJitInfo *callee_ji;
1295 gboolean virtual = oti->info_type == MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
1296 gint32 vcall_offset;
1297 gboolean callee_gsharedvt;
1299 /* This is the original generic signature used by the caller */
1300 call_sig = call_info->sig;
1301 /* This is the instantiated method which is called */
1302 method = call_info->method;
1304 g_assert (method->is_inflated);
1307 addr = mono_compile_method (method);
1312 /* Same as in mono_emit_method_call_full () */
1313 if ((method->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (method->name, "Invoke"))) {
1314 /* See mono_emit_method_call_full () */
1315 /* The gsharedvt trampoline will recognize this constant */
1316 vcall_offset = MONO_GSHAREDVT_DEL_INVOKE_VT_OFFSET;
1317 } else if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
1318 guint32 imt_slot = mono_method_get_imt_slot (method);
1319 vcall_offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
1321 vcall_offset = G_STRUCT_OFFSET (MonoVTable, vtable) +
1322 ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
1328 // FIXME: This loads information in the AOT case
1329 callee_ji = mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (addr), NULL);
1330 callee_gsharedvt = ji_is_gsharedvt (callee_ji);
1333 * For gsharedvt calls made out of gsharedvt methods, the callee could end up being a gsharedvt method, or a normal
1334 * non-shared method. The latter call cannot be patched, so instead of using a normal call, we make an indirect
1335 * call through the rgctx, in effect patching the rgctx entry instead of the call site.
1336 * For virtual calls, the caller might be a normal or a gsharedvt method. Since there is only one vtable slot,
1337 * this difference needs to be handed on the caller side. This is currently implemented by adding a gsharedvt-in
1338 * trampoline to all gsharedvt methods and storing this trampoline into the vtable slot. Virtual calls made from
1339 * gsharedvt methods always go through a gsharedvt-out trampoline, so the calling sequence is:
1340 * caller -> out trampoline -> in trampoline -> callee
1341 * This is not very efficient, but it is easy to implement.
1343 if (virtual || !callee_gsharedvt) {
1344 MonoMethodSignature *sig, *gsig;
1346 g_assert (method->is_inflated);
1348 sig = mono_method_signature (method);
1351 addr = mini_get_gsharedvt_wrapper (FALSE, addr, sig, gsig, vcall_offset, FALSE);
1354 printf ("OUT-VCALL: %s\n", mono_method_full_name (method, TRUE));
1356 printf ("OUT: %s\n", mono_method_full_name (method, TRUE));
1358 // } else if (!mini_is_gsharedvt_variable_signature (mono_method_signature (caller_method)) && callee_gsharedvt) {
1359 } else if (callee_gsharedvt) {
1360 MonoMethodSignature *sig, *gsig;
1363 * This is a combination of the out and in cases, since both the caller and the callee are gsharedvt methods.
1364 * The caller and the callee can use different gsharedvt signatures, so we have to add both an out and an in
1367 * public void foo<T1> (T1 t1, T t, object o) {}
1369 * class AClass : Base<long> {
1370 * public void bar<T> (T t, long time, object o) {
1374 * Here, the caller uses !!0,long, while the callee uses !!0,!0
1375 * FIXME: Optimize this.
1378 if (call_sig == mono_method_signature (method)) {
1380 sig = mono_method_signature (method);
1381 gsig = mono_method_signature (jinfo_get_method (callee_ji));
1383 addr = mini_get_gsharedvt_wrapper (TRUE, callee_ji->code_start, sig, gsig, -1, FALSE);
1385 sig = mono_method_signature (method);
1388 addr = mini_get_gsharedvt_wrapper (FALSE, addr, sig, gsig, -1, FALSE);
1390 //printf ("OUT-IN-RGCTX: %s\n", mono_method_full_name (method, TRUE));
1396 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO: {
1397 MonoGSharedVtMethodInfo *info = data;
1398 MonoGSharedVtMethodRuntimeInfo *res;
1400 int i, offset, align, size;
1403 res = g_malloc0 (sizeof (MonoGSharedVtMethodRuntimeInfo) + (info->num_entries * sizeof (gpointer)));
1406 for (i = 0; i < info->num_entries; ++i) {
1407 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
1409 switch (template->info_type) {
1410 case MONO_RGCTX_INFO_LOCAL_OFFSET:
1413 size = mono_type_size (t, &align);
1415 if (align < sizeof (gpointer))
1416 align = sizeof (gpointer);
1417 if (MONO_TYPE_ISSTRUCT (t) && align < 2 * sizeof (gpointer))
1418 align = 2 * sizeof (gpointer);
1420 // FIXME: Do the same things as alloc_stack_slots
1421 offset += align - 1;
1422 offset &= ~(align - 1);
1423 res->entries [i] = GINT_TO_POINTER (offset);
1427 res->entries [i] = instantiate_info (domain, template, context, klass);
1431 res->locals_size = offset;
1436 g_assert_not_reached ();
1443 * LOCKING: loader lock
1446 fill_in_rgctx_template_slot (MonoClass *klass, int type_argc, int index, gpointer data, MonoRgctxInfoType info_type)
1448 MonoRuntimeGenericContextTemplate *template = mono_class_get_runtime_generic_context_template (klass);
1449 MonoClass *subclass;
1451 rgctx_template_set_slot (klass->image, template, type_argc, index, data, info_type);
1453 /* Recurse for all subclasses */
1454 if (generic_subclass_hash)
1455 subclass = g_hash_table_lookup (generic_subclass_hash, klass);
1460 MonoRuntimeGenericContextInfoTemplate subclass_oti;
1461 MonoRuntimeGenericContextTemplate *subclass_template = class_lookup_rgctx_template (subclass);
1463 g_assert (subclass_template);
1465 subclass_oti = class_get_rgctx_template_oti (subclass->parent, type_argc, index, FALSE, FALSE, NULL);
1466 g_assert (subclass_oti.data);
1468 fill_in_rgctx_template_slot (subclass, type_argc, index, subclass_oti.data, info_type);
1470 subclass = subclass_template->next_subclass;
1475 mono_rgctx_info_type_to_str (MonoRgctxInfoType type)
1478 case MONO_RGCTX_INFO_STATIC_DATA: return "STATIC_DATA";
1479 case MONO_RGCTX_INFO_KLASS: return "KLASS";
1480 case MONO_RGCTX_INFO_ELEMENT_KLASS: return "ELEMENT_KLASS";
1481 case MONO_RGCTX_INFO_VTABLE: return "VTABLE";
1482 case MONO_RGCTX_INFO_TYPE: return "TYPE";
1483 case MONO_RGCTX_INFO_REFLECTION_TYPE: return "REFLECTION_TYPE";
1484 case MONO_RGCTX_INFO_METHOD: return "METHOD";
1485 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO: return "GSHAREDVT_INFO";
1486 case MONO_RGCTX_INFO_GENERIC_METHOD_CODE: return "GENERIC_METHOD_CODE";
1487 case MONO_RGCTX_INFO_CLASS_FIELD: return "CLASS_FIELD";
1488 case MONO_RGCTX_INFO_METHOD_RGCTX: return "METHOD_RGCTX";
1489 case MONO_RGCTX_INFO_METHOD_CONTEXT: return "METHOD_CONTEXT";
1490 case MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK: return "REMOTING_INVOKE_WITH_CHECK";
1491 case MONO_RGCTX_INFO_METHOD_DELEGATE_CODE: return "METHOD_DELEGATE_CODE";
1492 case MONO_RGCTX_INFO_CAST_CACHE: return "CAST_CACHE";
1493 case MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE: return "ARRAY_ELEMENT_SIZE";
1494 case MONO_RGCTX_INFO_VALUE_SIZE: return "VALUE_SIZE";
1495 case MONO_RGCTX_INFO_CLASS_BOX_TYPE: return "CLASS_BOX_TYPE";
1496 case MONO_RGCTX_INFO_FIELD_OFFSET: return "FIELD_OFFSET";
1497 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE: return "METHOD_GSHAREDVT_OUT_TRAMPOLINE";
1498 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT: return "METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT";
1499 case MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI: return "SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI";
1500 case MONO_RGCTX_INFO_MEMCPY: return "MEMCPY";
1501 case MONO_RGCTX_INFO_BZERO: return "BZERO";
1502 case MONO_RGCTX_INFO_NULLABLE_CLASS_BOX: return "NULLABLE_CLASS_BOX";
1503 case MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX: return "NULLABLE_CLASS_UNBOX";
1504 case MONO_RGCTX_INFO_VIRT_METHOD_CODE: return "VIRT_METHOD_CODE";
1505 case MONO_RGCTX_INFO_VIRT_METHOD_BOX_TYPE: return "VIRT_METHOD_BOX_TYPE";
1507 return "<UNKNOWN RGCTX INFO TYPE>";
1511 G_GNUC_UNUSED static char*
1512 rgctx_info_to_str (MonoRgctxInfoType info_type, gpointer data)
1514 switch (info_type) {
1515 case MONO_RGCTX_INFO_VTABLE:
1516 return mono_type_full_name ((MonoType*)data);
1518 return g_strdup_printf ("<%p>", data);
1523 * LOCKING: loader lock
1526 register_info (MonoClass *klass, int type_argc, gpointer data, MonoRgctxInfoType info_type)
1529 MonoRuntimeGenericContextTemplate *template = mono_class_get_runtime_generic_context_template (klass);
1531 MonoRuntimeGenericContextInfoTemplate *oti;
1533 for (i = 0, oti = get_info_templates (template, type_argc); oti; ++i, oti = oti->next) {
1538 DEBUG (printf ("set slot %s, infos [%d] = %s, %s\n", mono_type_get_full_name (class), i, mono_rgctx_info_type_to_str (info_type), rgctx_info_to_str (info_type, data)));
1540 /* Mark the slot as used in all parent classes (until we find
1541 a parent class which already has it marked used). */
1542 parent = klass->parent;
1543 while (parent != NULL) {
1544 MonoRuntimeGenericContextTemplate *parent_template;
1545 MonoRuntimeGenericContextInfoTemplate *oti;
1547 if (parent->generic_class)
1548 parent = parent->generic_class->container_class;
1550 parent_template = mono_class_get_runtime_generic_context_template (parent);
1551 oti = rgctx_template_get_other_slot (parent_template, type_argc, i);
1553 if (oti && oti->data)
1556 rgctx_template_set_slot (parent->image, parent_template, type_argc, i,
1557 MONO_RGCTX_SLOT_USED_MARKER, 0);
1559 parent = parent->parent;
1562 /* Fill in the slot in this class and in all subclasses
1564 fill_in_rgctx_template_slot (klass, type_argc, i, data, info_type);
1570 info_equal (gpointer data1, gpointer data2, MonoRgctxInfoType info_type)
1572 switch (info_type) {
1573 case MONO_RGCTX_INFO_STATIC_DATA:
1574 case MONO_RGCTX_INFO_KLASS:
1575 case MONO_RGCTX_INFO_ELEMENT_KLASS:
1576 case MONO_RGCTX_INFO_VTABLE:
1577 case MONO_RGCTX_INFO_TYPE:
1578 case MONO_RGCTX_INFO_REFLECTION_TYPE:
1579 case MONO_RGCTX_INFO_CAST_CACHE:
1580 case MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE:
1581 case MONO_RGCTX_INFO_VALUE_SIZE:
1582 case MONO_RGCTX_INFO_CLASS_BOX_TYPE:
1583 case MONO_RGCTX_INFO_MEMCPY:
1584 case MONO_RGCTX_INFO_BZERO:
1585 case MONO_RGCTX_INFO_NULLABLE_CLASS_BOX:
1586 case MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX:
1587 return mono_class_from_mono_type (data1) == mono_class_from_mono_type (data2);
1588 case MONO_RGCTX_INFO_METHOD:
1589 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO:
1590 case MONO_RGCTX_INFO_GENERIC_METHOD_CODE:
1591 case MONO_RGCTX_INFO_CLASS_FIELD:
1592 case MONO_RGCTX_INFO_FIELD_OFFSET:
1593 case MONO_RGCTX_INFO_METHOD_RGCTX:
1594 case MONO_RGCTX_INFO_METHOD_CONTEXT:
1595 case MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK:
1596 case MONO_RGCTX_INFO_METHOD_DELEGATE_CODE:
1597 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE:
1598 case MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT:
1599 case MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI:
1600 return data1 == data2;
1601 case MONO_RGCTX_INFO_VIRT_METHOD_CODE:
1602 case MONO_RGCTX_INFO_VIRT_METHOD_BOX_TYPE: {
1603 MonoJumpInfoVirtMethod *info1 = data1;
1604 MonoJumpInfoVirtMethod *info2 = data2;
1606 return info1->klass == info2->klass && info1->method == info2->method;
1609 g_assert_not_reached ();
1616 * mini_rgctx_info_type_to_patch_info_type:
1618 * Return the type of the runtime object referred to by INFO_TYPE.
1621 mini_rgctx_info_type_to_patch_info_type (MonoRgctxInfoType info_type)
1623 switch (info_type) {
1624 case MONO_RGCTX_INFO_STATIC_DATA:
1625 case MONO_RGCTX_INFO_KLASS:
1626 case MONO_RGCTX_INFO_ELEMENT_KLASS:
1627 case MONO_RGCTX_INFO_VTABLE:
1628 case MONO_RGCTX_INFO_TYPE:
1629 case MONO_RGCTX_INFO_REFLECTION_TYPE:
1630 case MONO_RGCTX_INFO_CAST_CACHE:
1631 case MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE:
1632 case MONO_RGCTX_INFO_VALUE_SIZE:
1633 case MONO_RGCTX_INFO_CLASS_BOX_TYPE:
1634 case MONO_RGCTX_INFO_MEMCPY:
1635 case MONO_RGCTX_INFO_BZERO:
1636 case MONO_RGCTX_INFO_NULLABLE_CLASS_BOX:
1637 case MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX:
1638 case MONO_RGCTX_INFO_LOCAL_OFFSET:
1639 return MONO_PATCH_INFO_CLASS;
1640 case MONO_RGCTX_INFO_FIELD_OFFSET:
1641 return MONO_PATCH_INFO_FIELD;
1643 g_assert_not_reached ();
1649 lookup_or_register_info (MonoClass *klass, int type_argc, gpointer data, MonoRgctxInfoType info_type,
1650 MonoGenericContext *generic_context)
1652 static gboolean inited = FALSE;
1653 static int max_slot = 0;
1655 MonoRuntimeGenericContextTemplate *rgctx_template =
1656 mono_class_get_runtime_generic_context_template (klass);
1657 MonoRuntimeGenericContextInfoTemplate *oti_list, *oti;
1660 klass = get_shared_class (klass);
1662 mono_loader_lock ();
1664 if (info_has_identity (info_type)) {
1665 oti_list = get_info_templates (rgctx_template, type_argc);
1667 for (oti = oti_list, i = 0; oti; oti = oti->next, ++i) {
1668 gpointer inflated_data;
1670 if (oti->info_type != info_type || !oti->data)
1673 inflated_data = inflate_info (oti, generic_context, klass, TRUE);
1675 if (info_equal (data, inflated_data, info_type)) {
1676 free_inflated_info (info_type, inflated_data);
1677 mono_loader_unlock ();
1680 free_inflated_info (info_type, inflated_data);
1684 /* We haven't found the info */
1685 i = register_info (klass, type_argc, data, info_type);
1687 mono_loader_unlock ();
1690 mono_counters_register ("RGCTX max slot number", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &max_slot);
1700 * mono_method_lookup_or_register_info:
1702 * @in_mrgctx: whether to put the data into the MRGCTX
1703 * @data: the info data
1704 * @info_type: the type of info to register about data
1705 * @generic_context: a generic context
1707 * Looks up and, if necessary, adds information about data/info_type in
1708 * method's or method's class runtime generic context. Returns the
1709 * encoded slot number.
1712 mono_method_lookup_or_register_info (MonoMethod *method, gboolean in_mrgctx, gpointer data,
1713 MonoRgctxInfoType info_type, MonoGenericContext *generic_context)
1715 MonoClass *klass = method->klass;
1716 int type_argc, index;
1719 MonoGenericInst *method_inst = mono_method_get_context (method)->method_inst;
1721 g_assert (method->is_inflated && method_inst);
1722 type_argc = method_inst->type_argc;
1723 g_assert (type_argc > 0);
1728 index = lookup_or_register_info (klass, type_argc, data, info_type, generic_context);
1730 //g_print ("rgctx item at index %d argc %d\n", index, type_argc);
1733 return MONO_RGCTX_SLOT_MAKE_MRGCTX (index);
1735 return MONO_RGCTX_SLOT_MAKE_RGCTX (index);
1739 * mono_class_rgctx_get_array_size:
1740 * @n: The number of the array
1741 * @mrgctx: Whether it's an MRGCTX as opposed to a RGCTX.
1743 * Returns the number of slots in the n'th array of a (M)RGCTX. That
1744 * number includes the slot for linking and - for MRGCTXs - the two
1745 * slots in the first array for additional information.
1748 mono_class_rgctx_get_array_size (int n, gboolean mrgctx)
1750 g_assert (n >= 0 && n < 30);
1759 * LOCKING: domain lock
1762 alloc_rgctx_array (MonoDomain *domain, int n, gboolean is_mrgctx)
1764 static gboolean inited = FALSE;
1765 static int rgctx_num_alloced = 0;
1766 static int rgctx_bytes_alloced = 0;
1767 static int mrgctx_num_alloced = 0;
1768 static int mrgctx_bytes_alloced = 0;
1770 int size = mono_class_rgctx_get_array_size (n, is_mrgctx) * sizeof (gpointer);
1771 gpointer array = mono_domain_alloc0 (domain, size);
1774 mono_counters_register ("RGCTX num arrays alloced", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &rgctx_num_alloced);
1775 mono_counters_register ("RGCTX bytes alloced", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &rgctx_bytes_alloced);
1776 mono_counters_register ("MRGCTX num arrays alloced", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &mrgctx_num_alloced);
1777 mono_counters_register ("MRGCTX bytes alloced", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &mrgctx_bytes_alloced);
1782 mrgctx_num_alloced++;
1783 mrgctx_bytes_alloced += size;
1785 rgctx_num_alloced++;
1786 rgctx_bytes_alloced += size;
1793 fill_runtime_generic_context (MonoVTable *class_vtable, MonoRuntimeGenericContext *rgctx, guint32 slot,
1794 MonoGenericInst *method_inst)
1797 int i, first_slot, size;
1798 MonoDomain *domain = class_vtable->domain;
1799 MonoClass *klass = class_vtable->klass;
1800 MonoGenericContext *class_context = klass->generic_class ? &klass->generic_class->context : NULL;
1801 MonoRuntimeGenericContextInfoTemplate oti;
1802 MonoGenericContext context = { class_context ? class_context->class_inst : NULL, method_inst };
1808 mono_domain_lock (domain);
1810 /* First check whether that slot isn't already instantiated.
1811 This might happen because lookup doesn't lock. Allocate
1812 arrays on the way. */
1814 size = mono_class_rgctx_get_array_size (0, method_inst != NULL);
1816 size -= MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
1817 for (i = 0; ; ++i) {
1820 if (method_inst && i == 0)
1821 offset = MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
1825 if (slot < first_slot + size - 1) {
1826 rgctx_index = slot - first_slot + 1 + offset;
1827 info = rgctx [rgctx_index];
1829 mono_domain_unlock (domain);
1834 if (!rgctx [offset + 0])
1835 rgctx [offset + 0] = alloc_rgctx_array (domain, i + 1, method_inst != NULL);
1836 rgctx = rgctx [offset + 0];
1837 first_slot += size - 1;
1838 size = mono_class_rgctx_get_array_size (i + 1, method_inst != NULL);
1841 g_assert (!rgctx [rgctx_index]);
1843 mono_domain_unlock (domain);
1845 oti = class_get_rgctx_template_oti (get_shared_class (klass),
1846 method_inst ? method_inst->type_argc : 0, slot, TRUE, TRUE, &do_free);
1847 /* This might take the loader lock */
1848 info = instantiate_info (domain, &oti, &context, klass);
1852 g_print ("filling mrgctx slot %d table %d index %d\n", slot, i, rgctx_index);
1855 /*FIXME We should use CAS here, no need to take a lock.*/
1856 mono_domain_lock (domain);
1858 /* Check whether the slot hasn't been instantiated in the
1860 if (rgctx [rgctx_index])
1861 info = rgctx [rgctx_index];
1863 rgctx [rgctx_index] = info;
1865 mono_domain_unlock (domain);
1868 free_inflated_info (oti.info_type, oti.data);
1874 * mono_class_fill_runtime_generic_context:
1875 * @class_vtable: a vtable
1876 * @slot: a slot index to be instantiated
1878 * Instantiates a slot in the RGCTX, returning its value.
1881 mono_class_fill_runtime_generic_context (MonoVTable *class_vtable, guint32 slot)
1883 static gboolean inited = FALSE;
1884 static int num_alloced = 0;
1886 MonoDomain *domain = class_vtable->domain;
1887 MonoRuntimeGenericContext *rgctx;
1890 mono_domain_lock (domain);
1893 mono_counters_register ("RGCTX num alloced", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_alloced);
1897 rgctx = class_vtable->runtime_generic_context;
1899 rgctx = alloc_rgctx_array (domain, 0, FALSE);
1900 class_vtable->runtime_generic_context = rgctx;
1904 mono_domain_unlock (domain);
1906 info = fill_runtime_generic_context (class_vtable, rgctx, slot, 0);
1908 DEBUG (printf ("get rgctx slot: %s %d -> %p\n", mono_type_full_name (&class_vtable->klass->byval_arg), slot, info));
1914 * mono_method_fill_runtime_generic_context:
1915 * @mrgctx: an MRGCTX
1916 * @slot: a slot index to be instantiated
1918 * Instantiates a slot in the MRGCTX.
1921 mono_method_fill_runtime_generic_context (MonoMethodRuntimeGenericContext *mrgctx, guint32 slot)
1925 info = fill_runtime_generic_context (mrgctx->class_vtable, (MonoRuntimeGenericContext*)mrgctx, slot, mrgctx->method_inst);
1931 mrgctx_hash_func (gconstpointer key)
1933 const MonoMethodRuntimeGenericContext *mrgctx = key;
1935 return mono_aligned_addr_hash (mrgctx->class_vtable) ^ mono_metadata_generic_inst_hash (mrgctx->method_inst);
1939 mrgctx_equal_func (gconstpointer a, gconstpointer b)
1941 const MonoMethodRuntimeGenericContext *mrgctx1 = a;
1942 const MonoMethodRuntimeGenericContext *mrgctx2 = b;
1944 return mrgctx1->class_vtable == mrgctx2->class_vtable &&
1945 mono_metadata_generic_inst_equal (mrgctx1->method_inst, mrgctx2->method_inst);
1949 * mono_method_lookup_rgctx:
1950 * @class_vtable: a vtable
1951 * @method_inst: the method inst of a generic method
1953 * Returns the MRGCTX for the generic method(s) with the given
1954 * method_inst of the given class_vtable.
1956 * LOCKING: Take the domain lock.
1958 MonoMethodRuntimeGenericContext*
1959 mono_method_lookup_rgctx (MonoVTable *class_vtable, MonoGenericInst *method_inst)
1961 MonoDomain *domain = class_vtable->domain;
1962 MonoMethodRuntimeGenericContext *mrgctx;
1963 MonoMethodRuntimeGenericContext key;
1965 g_assert (!class_vtable->klass->generic_container);
1966 g_assert (!method_inst->is_open);
1968 mono_domain_lock (domain);
1969 if (!domain->method_rgctx_hash)
1970 domain->method_rgctx_hash = g_hash_table_new (mrgctx_hash_func, mrgctx_equal_func);
1972 key.class_vtable = class_vtable;
1973 key.method_inst = method_inst;
1975 mrgctx = g_hash_table_lookup (domain->method_rgctx_hash, &key);
1980 mrgctx = (MonoMethodRuntimeGenericContext*)alloc_rgctx_array (domain, 0, TRUE);
1981 mrgctx->class_vtable = class_vtable;
1982 mrgctx->method_inst = method_inst;
1984 g_hash_table_insert (domain->method_rgctx_hash, mrgctx, mrgctx);
1987 g_print ("mrgctx alloced for %s <", mono_type_get_full_name (class_vtable->klass));
1988 for (i = 0; i < method_inst->type_argc; ++i)
1989 g_print ("%s, ", mono_type_full_name (method_inst->type_argv [i]));
1994 mono_domain_unlock (domain);
2003 generic_inst_is_sharable (MonoGenericInst *inst, gboolean allow_type_vars,
2004 gboolean allow_partial);
2007 type_is_sharable (MonoType *type, gboolean allow_type_vars, gboolean allow_partial)
2009 if (allow_type_vars && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR)) {
2010 MonoType *constraint = type->data.generic_param->gshared_constraint;
2016 if (MONO_TYPE_IS_REFERENCE (type))
2019 /* Allow non ref arguments if they are primitive types or enums (partial sharing). */
2020 if (allow_partial && !type->byref && (((type->type >= MONO_TYPE_BOOLEAN) && (type->type <= MONO_TYPE_R8)) || (type->type == MONO_TYPE_I) || (type->type == MONO_TYPE_U) || (type->type == MONO_TYPE_VALUETYPE && type->data.klass->enumtype)))
2023 if (allow_partial && !type->byref && type->type == MONO_TYPE_GENERICINST && MONO_TYPE_ISSTRUCT (type)) {
2024 MonoGenericClass *gclass = type->data.generic_class;
2026 if (gclass->context.class_inst && !generic_inst_is_sharable (gclass->context.class_inst, allow_type_vars, allow_partial))
2028 if (gclass->context.method_inst && !generic_inst_is_sharable (gclass->context.method_inst, allow_type_vars, allow_partial))
2030 if (mono_class_is_nullable (mono_class_from_mono_type (type)))
2039 generic_inst_is_sharable (MonoGenericInst *inst, gboolean allow_type_vars,
2040 gboolean allow_partial)
2044 for (i = 0; i < inst->type_argc; ++i) {
2045 if (!type_is_sharable (inst->type_argv [i], allow_type_vars, allow_partial))
2053 * mono_is_partially_sharable_inst:
2055 * Return TRUE if INST has ref and non-ref type arguments.
2058 mono_is_partially_sharable_inst (MonoGenericInst *inst)
2061 gboolean has_refs = FALSE, has_non_refs = FALSE;
2063 for (i = 0; i < inst->type_argc; ++i) {
2064 if (MONO_TYPE_IS_REFERENCE (inst->type_argv [i]) || inst->type_argv [i]->type == MONO_TYPE_VAR || inst->type_argv [i]->type == MONO_TYPE_MVAR)
2067 has_non_refs = TRUE;
2070 return has_refs && has_non_refs;
2074 * mono_generic_context_is_sharable_full:
2075 * @context: a generic context
2077 * Returns whether the generic context is sharable. A generic context
2078 * is sharable iff all of its type arguments are reference type, or some of them have a
2079 * reference type, and ALLOW_PARTIAL is TRUE.
2082 mono_generic_context_is_sharable_full (MonoGenericContext *context,
2083 gboolean allow_type_vars,
2084 gboolean allow_partial)
2086 g_assert (context->class_inst || context->method_inst);
2088 if (context->class_inst && !generic_inst_is_sharable (context->class_inst, allow_type_vars, allow_partial))
2091 if (context->method_inst && !generic_inst_is_sharable (context->method_inst, allow_type_vars, allow_partial))
2098 mono_generic_context_is_sharable (MonoGenericContext *context, gboolean allow_type_vars)
2100 return mono_generic_context_is_sharable_full (context, allow_type_vars, partial_sharing_supported ());
2104 * mono_method_is_generic_impl:
2107 * Returns whether the method is either generic or part of a generic
2111 mono_method_is_generic_impl (MonoMethod *method)
2113 if (method->is_inflated)
2115 /* We don't treat wrappers as generic code, i.e., we never
2116 apply generic sharing to them. This is especially
2117 important for static rgctx invoke wrappers, which only work
2118 if not compiled with sharing. */
2119 if (method->wrapper_type != MONO_WRAPPER_NONE)
2121 if (method->klass->generic_container)
2127 has_constraints (MonoGenericContainer *container)
2133 g_assert (container->type_argc > 0);
2134 g_assert (container->type_params);
2136 for (i = 0; i < container->type_argc; ++i)
2137 if (container->type_params [i].constraints)
2144 mini_method_is_open (MonoMethod *method)
2146 if (method->is_inflated) {
2147 MonoGenericContext *ctx = mono_method_get_context (method);
2149 if (ctx->class_inst && ctx->class_inst->is_open)
2151 if (ctx->method_inst && ctx->method_inst->is_open)
2157 static G_GNUC_UNUSED gboolean
2158 is_async_state_machine_class (MonoClass *klass)
2160 static MonoClass *iclass;
2161 static gboolean iclass_set;
2166 iclass = mono_class_from_name (mono_defaults.corlib, "System.Runtime.CompilerServices", "IAsyncStateMachine");
2167 mono_memory_barrier ();
2171 if (iclass && klass->valuetype && mono_class_is_assignable_from (iclass, klass))
2176 static G_GNUC_UNUSED gboolean
2177 is_async_method (MonoMethod *method)
2179 MonoCustomAttrInfo *cattr;
2180 MonoMethodSignature *sig;
2181 gboolean res = FALSE;
2182 static MonoClass *attr_class;
2183 static gboolean attr_class_set;
2187 if (!attr_class_set) {
2188 attr_class = mono_class_from_name (mono_defaults.corlib, "System.Runtime.CompilerServices", "AsyncStateMachineAttribute");
2189 mono_memory_barrier ();
2190 attr_class_set = TRUE;
2193 /* Do less expensive checks first */
2194 sig = mono_method_signature (method);
2195 if (attr_class && sig && ((sig->ret->type == MONO_TYPE_VOID) ||
2196 (sig->ret->type == MONO_TYPE_CLASS && !strcmp (sig->ret->data.generic_class->container_class->name, "Task")) ||
2197 (sig->ret->type == MONO_TYPE_GENERICINST && !strcmp (sig->ret->data.generic_class->container_class->name, "Task`1")))) {
2198 //printf ("X: %s\n", mono_method_full_name (method, TRUE));
2199 cattr = mono_custom_attrs_from_method (method);
2201 if (mono_custom_attrs_has_attr (cattr, attr_class))
2203 mono_custom_attrs_free (cattr);
2210 * mono_method_is_generic_sharable_full:
2212 * @allow_type_vars: whether to regard type variables as reference types
2213 * @allow_partial: whether to allow partial sharing
2214 * @allow_gsharedvt: whenever to allow sharing over valuetypes
2216 * Returns TRUE iff the method is inflated or part of an inflated
2217 * class, its context is sharable and it has no constraints on its
2218 * type parameters. Otherwise returns FALSE.
2221 mono_method_is_generic_sharable_full (MonoMethod *method, gboolean allow_type_vars,
2222 gboolean allow_partial, gboolean allow_gsharedvt)
2224 if (!mono_method_is_generic_impl (method))
2228 if (!mono_debug_count ())
2229 allow_partial = FALSE;
2232 if (!partial_sharing_supported ())
2233 allow_partial = FALSE;
2235 if (mono_class_is_nullable (method->klass))
2237 allow_partial = FALSE;
2239 if (method->klass->image->dynamic)
2241 * Enabling this causes corlib test failures because the JIT encounters generic instances whose
2242 * instance_size is 0.
2244 allow_partial = FALSE;
2247 * Generic async methods have an associated state machine class which is a generic struct. This struct
2248 * is too large to be handled by gsharedvt so we make it visible to the AOT compiler by disabling sharing
2249 * of the async method and the state machine class.
2251 if (is_async_state_machine_class (method->klass))
2254 if (allow_gsharedvt && mini_is_gsharedvt_sharable_method (method)) {
2255 if (is_async_method (method))
2260 if (method->is_inflated) {
2261 MonoMethodInflated *inflated = (MonoMethodInflated*)method;
2262 MonoGenericContext *context = &inflated->context;
2264 if (!mono_generic_context_is_sharable_full (context, allow_type_vars, allow_partial))
2267 g_assert (inflated->declaring);
2269 if (inflated->declaring->is_generic) {
2270 if (has_constraints (mono_method_get_generic_container (inflated->declaring)))
2275 if (method->klass->generic_class) {
2276 if (!mono_generic_context_is_sharable_full (&method->klass->generic_class->context, allow_type_vars, allow_partial))
2279 g_assert (method->klass->generic_class->container_class &&
2280 method->klass->generic_class->container_class->generic_container);
2282 if (has_constraints (method->klass->generic_class->container_class->generic_container))
2286 if (method->klass->generic_container && !allow_type_vars)
2289 /* This does potentially expensive cattr checks, so do it at the end */
2290 if (is_async_method (method)) {
2291 if (mini_method_is_open (method))
2292 /* The JIT can't compile these without sharing */
2301 mono_method_is_generic_sharable (MonoMethod *method, gboolean allow_type_vars)
2303 return mono_method_is_generic_sharable_full (method, allow_type_vars, partial_sharing_supported (), TRUE);
2307 * mono_method_needs_static_rgctx_invoke:
2309 * Return whenever METHOD needs an rgctx argument.
2310 * An rgctx argument is needed when the method is generic sharable, but it doesn't
2311 * have a this argument which can be used to load the rgctx.
2314 mono_method_needs_static_rgctx_invoke (MonoMethod *method, gboolean allow_type_vars)
2316 if (!mono_class_generic_sharing_enabled (method->klass))
2319 if (!mono_method_is_generic_sharable (method, allow_type_vars))
2322 if (method->is_inflated && mono_method_get_context (method)->method_inst)
2325 return ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
2326 method->klass->valuetype) &&
2327 (method->klass->generic_class || method->klass->generic_container);
2330 static MonoGenericInst*
2331 get_object_generic_inst (int type_argc)
2333 MonoType **type_argv;
2336 type_argv = alloca (sizeof (MonoType*) * type_argc);
2338 for (i = 0; i < type_argc; ++i)
2339 type_argv [i] = &mono_defaults.object_class->byval_arg;
2341 return mono_metadata_get_generic_inst (type_argc, type_argv);
2345 * mono_method_construct_object_context:
2348 * Returns a generic context for method with all type variables for
2349 * class and method instantiated with Object.
2352 mono_method_construct_object_context (MonoMethod *method)
2354 MonoGenericContext object_context;
2356 g_assert (!method->klass->generic_class);
2357 if (method->klass->generic_container) {
2358 int type_argc = method->klass->generic_container->type_argc;
2360 object_context.class_inst = get_object_generic_inst (type_argc);
2362 object_context.class_inst = NULL;
2365 if (mono_method_get_context_general (method, TRUE)->method_inst) {
2366 int type_argc = mono_method_get_context_general (method, TRUE)->method_inst->type_argc;
2368 object_context.method_inst = get_object_generic_inst (type_argc);
2370 object_context.method_inst = NULL;
2373 g_assert (object_context.class_inst || object_context.method_inst);
2375 return object_context;
2378 static gboolean gshared_supported;
2379 static gboolean gsharedvt_supported;
2382 mono_set_generic_sharing_supported (gboolean supported)
2384 gshared_supported = supported;
2388 mono_set_generic_sharing_vt_supported (gboolean supported)
2390 gsharedvt_supported = supported;
2394 mono_set_partial_sharing_supported (gboolean supported)
2396 partial_supported = supported;
2400 * mono_class_generic_sharing_enabled:
2403 * Returns whether generic sharing is enabled for class.
2405 * This is a stop-gap measure to slowly introduce generic sharing
2406 * until we have all the issues sorted out, at which time this
2407 * function will disappear and generic sharing will always be enabled.
2410 mono_class_generic_sharing_enabled (MonoClass *klass)
2412 if (gshared_supported)
2419 mini_method_get_context (MonoMethod *method)
2421 return mono_method_get_context_general (method, TRUE);
2425 * mono_method_check_context_used:
2428 * Checks whether the method's generic context uses a type variable.
2429 * Returns an int with the bits MONO_GENERIC_CONTEXT_USED_CLASS and
2430 * MONO_GENERIC_CONTEXT_USED_METHOD set to reflect whether the
2431 * context's class or method instantiation uses type variables.
2434 mono_method_check_context_used (MonoMethod *method)
2436 MonoGenericContext *method_context = mini_method_get_context (method);
2437 int context_used = 0;
2439 if (!method_context) {
2440 /* It might be a method of an array of an open generic type */
2441 if (method->klass->rank)
2442 context_used = mono_class_check_context_used (method->klass);
2444 context_used = mono_generic_context_check_used (method_context);
2445 context_used |= mono_class_check_context_used (method->klass);
2448 return context_used;
2452 generic_inst_equal (MonoGenericInst *inst1, MonoGenericInst *inst2)
2463 if (inst1->type_argc != inst2->type_argc)
2466 for (i = 0; i < inst1->type_argc; ++i)
2467 if (!mono_metadata_type_equal (inst1->type_argv [i], inst2->type_argv [i]))
2474 * mono_generic_context_equal_deep:
2475 * @context1: a generic context
2476 * @context2: a generic context
2478 * Returns whether context1's type arguments are equal to context2's
2482 mono_generic_context_equal_deep (MonoGenericContext *context1, MonoGenericContext *context2)
2484 return generic_inst_equal (context1->class_inst, context2->class_inst) &&
2485 generic_inst_equal (context1->method_inst, context2->method_inst);
2489 * mini_class_get_container_class:
2490 * @class: a generic class
2492 * Returns the class's container class, which is the class itself if
2493 * it doesn't have generic_class set.
2496 mini_class_get_container_class (MonoClass *klass)
2498 if (klass->generic_class)
2499 return klass->generic_class->container_class;
2501 g_assert (klass->generic_container);
2506 * mini_class_get_context:
2507 * @class: a generic class
2509 * Returns the class's generic context.
2512 mini_class_get_context (MonoClass *klass)
2514 if (klass->generic_class)
2515 return &klass->generic_class->context;
2517 g_assert (klass->generic_container);
2518 return &klass->generic_container->context;
2522 * mini_get_basic_type_from_generic:
2525 * Returns a closed type corresponding to the possibly open type
2529 mini_get_basic_type_from_generic (MonoType *type)
2531 if (!type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR) && mini_is_gsharedvt_type (type))
2533 else if (!type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR)) {
2534 MonoType *constraint = type->data.generic_param->gshared_constraint;
2535 /* The gparam serial encodes the type this gparam can represent */
2537 return &mono_defaults.object_class->byval_arg;
2541 g_assert (constraint != &mono_defaults.int_class->parent->byval_arg);
2542 klass = mono_class_from_mono_type (constraint);
2543 return &klass->byval_arg;
2546 return mini_native_type_replace_type (mono_type_get_basic_type_from_generic (type));
2551 * mini_type_get_underlying_type:
2553 * Return the underlying type of TYPE, taking into account enums, byref, bool, char and generic
2557 mini_type_get_underlying_type (MonoType *type)
2559 type = mini_native_type_replace_type (type);
2562 return &mono_defaults.int_class->byval_arg;
2563 if (!type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR) && mini_is_gsharedvt_type (type))
2565 type = mini_get_basic_type_from_generic (mono_type_get_underlying_type (type));
2566 switch (type->type) {
2567 case MONO_TYPE_BOOLEAN:
2568 return &mono_defaults.byte_class->byval_arg;
2569 case MONO_TYPE_CHAR:
2570 return &mono_defaults.uint16_class->byval_arg;
2577 * mini_type_stack_size:
2579 * @align: Pointer to an int for returning the alignment
2581 * Returns the type's stack size and the alignment in *align.
2584 mini_type_stack_size (MonoType *t, int *align)
2586 return mono_type_stack_size_internal (t, align, TRUE);
2590 * mini_type_stack_size_full:
2592 * Same as mini_type_stack_size, but handle pinvoke data types as well.
2595 mini_type_stack_size_full (MonoType *t, guint32 *align, gboolean pinvoke)
2599 //g_assert (!mini_is_gsharedvt_type (t));
2602 size = mono_type_native_stack_size (t, align);
2607 size = mini_type_stack_size (t, &ialign);
2610 size = mini_type_stack_size (t, NULL);
2618 * mono_generic_sharing_init:
2620 * Register the generic sharing counters.
2623 mono_generic_sharing_init (void)
2625 mono_install_image_unload_hook (mono_class_unregister_image_generic_subclasses, NULL);
2629 mono_generic_sharing_cleanup (void)
2631 mono_remove_image_unload_hook (mono_class_unregister_image_generic_subclasses, NULL);
2633 if (generic_subclass_hash)
2634 g_hash_table_destroy (generic_subclass_hash);
2638 * mini_type_var_is_vt:
2640 * Return whenever T is a type variable instantiated with a vtype.
2643 mini_type_var_is_vt (MonoType *type)
2645 if (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR) {
2646 return type->data.generic_param->gshared_constraint && type->data.generic_param->gshared_constraint->type == MONO_TYPE_VALUETYPE;
2648 g_assert_not_reached ();
2654 mini_type_is_reference (MonoType *type)
2656 type = mini_type_get_underlying_type (type);
2657 return mono_type_is_reference (type);
2661 * mini_method_get_rgctx:
2663 * Return the RGCTX which needs to be passed to M when it is called.
2666 mini_method_get_rgctx (MonoMethod *m)
2668 if (mini_method_get_context (m)->method_inst)
2669 return mono_method_lookup_rgctx (mono_class_vtable (mono_domain_get (), m->klass), mini_method_get_context (m)->method_inst);
2671 return mono_class_vtable (mono_domain_get (), m->klass);
2675 * mini_type_is_vtype:
2677 * Return whenever T is a vtype, or a type param instantiated with a vtype.
2678 * Should be used in place of MONO_TYPE_ISSTRUCT () which can't handle gsharedvt.
2681 mini_type_is_vtype (MonoType *t)
2683 t = mini_type_get_underlying_type (t);
2685 return MONO_TYPE_ISSTRUCT (t) || mini_is_gsharedvt_variable_type (t);
2689 mini_class_is_generic_sharable (MonoClass *klass)
2691 if (klass->generic_class && is_async_state_machine_class (klass))
2694 return (klass->generic_class && mono_generic_context_is_sharable (&klass->generic_class->context, FALSE));
2698 mini_is_gsharedvt_variable_klass (MonoClass *klass)
2700 return mini_is_gsharedvt_variable_type (&klass->byval_arg);
2704 mini_is_gsharedvt_gparam (MonoType *t)
2706 /* Matches get_gsharedvt_type () */
2707 return (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && t->data.generic_param->gshared_constraint && t->data.generic_param->gshared_constraint->type == MONO_TYPE_VALUETYPE;
2711 get_shared_gparam_name (MonoTypeEnum constraint, const char *name)
2713 if (constraint == MONO_TYPE_VALUETYPE) {
2714 return g_strdup_printf ("%s_GSHAREDVT", name);
2715 } else if (constraint == MONO_TYPE_OBJECT) {
2716 return g_strdup_printf ("%s_REF", name);
2717 } else if (constraint == MONO_TYPE_GENERICINST) {
2718 return g_strdup_printf ("%s_INST", name);
2721 char *tname, *tname2, *res;
2723 memset (&t, 0, sizeof (t));
2724 t.type = constraint;
2725 tname = mono_type_full_name (&t);
2726 tname2 = g_utf8_strup (tname, strlen (tname));
2727 res = g_strdup_printf ("%s_%s", name, tname2);
2735 shared_gparam_hash (gconstpointer data)
2737 MonoGSharedGenericParam *p = (MonoGSharedGenericParam*)data;
2740 hash = mono_metadata_generic_param_hash (p->parent);
2741 hash = ((hash << 5) - hash) ^ mono_metadata_type_hash (p->param.param.gshared_constraint);
2747 shared_gparam_equal (gconstpointer ka, gconstpointer kb)
2749 MonoGSharedGenericParam *p1 = (MonoGSharedGenericParam*)ka;
2750 MonoGSharedGenericParam *p2 = (MonoGSharedGenericParam*)kb;
2754 if (p1->parent != p2->parent)
2756 if (!mono_metadata_type_equal (p1->param.param.gshared_constraint, p2->param.param.gshared_constraint))
2762 * mini_get_shared_gparam:
2764 * Create an anonymous gparam from T with a constraint which encodes which types can match it.
2767 mini_get_shared_gparam (MonoType *t, MonoType *constraint)
2769 MonoGenericParam *par = t->data.generic_param;
2770 MonoGSharedGenericParam *copy, key;
2772 MonoImage *image = NULL;
2775 memset (&key, 0, sizeof (key));
2777 key.param.param.gshared_constraint = constraint;
2779 g_assert (mono_generic_param_info (par));
2780 /* image might not be set for sre */
2781 if (par->owner && par->owner->image) {
2782 image = par->owner->image;
2785 * Need a cache to ensure the newly created gparam
2786 * is unique wrt T/CONSTRAINT.
2788 mono_image_lock (image);
2789 if (!image->gshared_types) {
2790 image->gshared_types_len = MONO_TYPE_INTERNAL;
2791 image->gshared_types = g_new0 (GHashTable*, image->gshared_types_len);
2793 if (!image->gshared_types [constraint->type])
2794 image->gshared_types [constraint->type] = g_hash_table_new (shared_gparam_hash, shared_gparam_equal);
2795 res = g_hash_table_lookup (image->gshared_types [constraint->type], &key);
2796 mono_image_unlock (image);
2799 copy = mono_image_alloc0 (image, sizeof (MonoGSharedGenericParam));
2800 memcpy (©->param, par, sizeof (MonoGenericParamFull));
2801 name = get_shared_gparam_name (constraint->type, ((MonoGenericParamFull*)copy)->info.name);
2802 copy->param.info.name = mono_image_strdup (image, name);
2805 /* mono_generic_param_name () expects this to be a MonoGenericParamFull */
2806 copy = g_new0 (MonoGSharedGenericParam, 1);
2807 memcpy (©->param, par, sizeof (MonoGenericParam));
2809 copy->param.param.owner = NULL;
2811 copy->param.param.image = image ? image : mono_defaults.corlib;
2813 copy->param.param.gshared_constraint = constraint;
2815 res = mono_metadata_type_dup (NULL, t);
2816 res->data.generic_param = (MonoGenericParam*)copy;
2819 mono_image_lock (image);
2820 /* Duplicates are ok */
2821 g_hash_table_insert (image->gshared_types [constraint->type], copy, res);
2822 mono_image_unlock (image);
2828 static MonoGenericInst*
2829 get_shared_inst (MonoGenericInst *inst, MonoGenericInst *shared_inst, MonoGenericContainer *container, gboolean all_vt, gboolean gsharedvt, gboolean partial);
2832 get_shared_type (MonoType *t, MonoType *type)
2836 if (!type->byref && type->type == MONO_TYPE_GENERICINST && MONO_TYPE_ISSTRUCT (type)) {
2837 MonoGenericClass *gclass = type->data.generic_class;
2838 MonoGenericContext context;
2841 memset (&context, 0, sizeof (context));
2842 if (gclass->context.class_inst)
2843 context.class_inst = get_shared_inst (gclass->context.class_inst, gclass->container_class->generic_container->context.class_inst, NULL, FALSE, FALSE, TRUE);
2844 if (gclass->context.method_inst)
2845 context.method_inst = get_shared_inst (gclass->context.method_inst, gclass->container_class->generic_container->context.method_inst, NULL, FALSE, FALSE, TRUE);
2847 k = mono_class_inflate_generic_class (gclass->container_class, &context);
2849 return mini_get_shared_gparam (t, &k->byval_arg);
2850 } else if (MONO_TYPE_ISSTRUCT (type)) {
2854 /* Create a type variable with a constraint which encodes which types can match it */
2856 if (type->type == MONO_TYPE_VALUETYPE) {
2857 ttype = mono_class_enum_basetype (type->data.klass)->type;
2858 } else if (MONO_TYPE_IS_REFERENCE (type)) {
2859 ttype = MONO_TYPE_OBJECT;
2860 } else if (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR) {
2861 if (type->data.generic_param->gshared_constraint)
2862 return mini_get_shared_gparam (t, type->data.generic_param->gshared_constraint);
2863 ttype = MONO_TYPE_OBJECT;
2870 memset (&t2, 0, sizeof (t2));
2872 klass = mono_class_from_mono_type (&t2);
2874 return mini_get_shared_gparam (t, &klass->byval_arg);
2879 get_gsharedvt_type (MonoType *t)
2881 /* Use TypeHandle as the constraint type since its a valuetype */
2882 return mini_get_shared_gparam (t, &mono_defaults.typehandle_class->byval_arg);
2885 static MonoGenericInst*
2886 get_shared_inst (MonoGenericInst *inst, MonoGenericInst *shared_inst, MonoGenericContainer *container, gboolean all_vt, gboolean gsharedvt, gboolean partial)
2888 MonoGenericInst *res;
2889 MonoType **type_argv;
2892 type_argv = g_new0 (MonoType*, inst->type_argc);
2893 for (i = 0; i < inst->type_argc; ++i) {
2894 if (all_vt || gsharedvt) {
2895 type_argv [i] = get_gsharedvt_type (shared_inst->type_argv [i]);
2897 /* These types match the ones in generic_inst_is_sharable () */
2898 type_argv [i] = get_shared_type (shared_inst->type_argv [i], inst->type_argv [i]);
2902 res = mono_metadata_get_generic_inst (inst->type_argc, type_argv);
2908 * mini_get_shared_method_full:
2910 * Return the method which is actually compiled/registered when doing generic sharing.
2911 * If ALL_VT is true, return the shared method belonging to an all-vtype instantiation.
2912 * If IS_GSHAREDVT is true, treat METHOD as a gsharedvt method even if it fails some constraints.
2913 * METHOD can be a non-inflated generic method.
2916 mini_get_shared_method_full (MonoMethod *method, gboolean all_vt, gboolean is_gsharedvt)
2919 MonoGenericContext shared_context;
2920 MonoMethod *declaring_method, *res;
2921 gboolean partial = FALSE;
2922 gboolean gsharedvt = FALSE;
2923 MonoGenericContainer *class_container, *method_container = NULL;
2924 MonoGenericContext *context = mono_method_get_context (method);
2925 MonoGenericInst *inst;
2927 if (method->is_generic || (method->klass->generic_container && !method->is_inflated)) {
2928 declaring_method = method;
2930 declaring_method = mono_method_get_declaring_generic_method (method);
2933 /* shared_context is the context containing type variables. */
2934 if (declaring_method->is_generic)
2935 shared_context = mono_method_get_generic_container (declaring_method)->context;
2937 shared_context = declaring_method->klass->generic_container->context;
2940 partial = mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE);
2942 gsharedvt = is_gsharedvt || (!partial && mini_is_gsharedvt_sharable_method (method));
2944 class_container = declaring_method->klass->generic_container;
2945 method_container = mono_method_get_generic_container (declaring_method);
2948 * Create the shared context by replacing the ref type arguments with
2949 * type parameters, and keeping the rest.
2952 inst = context->class_inst;
2954 inst = shared_context.class_inst;
2956 shared_context.class_inst = get_shared_inst (inst, shared_context.class_inst, class_container, all_vt, gsharedvt, partial);
2959 inst = context->method_inst;
2961 inst = shared_context.method_inst;
2963 shared_context.method_inst = get_shared_inst (inst, shared_context.method_inst, method_container, all_vt, gsharedvt, partial);
2965 res = mono_class_inflate_generic_method_checked (declaring_method, &shared_context, &error);
2966 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
2968 //printf ("%s\n", mono_method_full_name (res, 1));
2974 mini_get_shared_method (MonoMethod *method)
2976 return mini_get_shared_method_full (method, FALSE, FALSE);
2980 mini_get_rgctx_entry_slot (MonoJumpInfoRgctxEntry *entry)
2984 switch (entry->data->type) {
2985 case MONO_PATCH_INFO_CLASS:
2986 slot = mono_method_lookup_or_register_info (entry->method, entry->in_mrgctx, &entry->data->data.klass->byval_arg, entry->info_type, mono_method_get_context (entry->method));
2988 case MONO_PATCH_INFO_METHOD:
2989 case MONO_PATCH_INFO_METHODCONST:
2990 slot = mono_method_lookup_or_register_info (entry->method, entry->in_mrgctx, entry->data->data.method, entry->info_type, mono_method_get_context (entry->method));
2992 case MONO_PATCH_INFO_FIELD:
2993 slot = mono_method_lookup_or_register_info (entry->method, entry->in_mrgctx, entry->data->data.field, entry->info_type, mono_method_get_context (entry->method));
2995 case MONO_PATCH_INFO_SIGNATURE:
2996 slot = mono_method_lookup_or_register_info (entry->method, entry->in_mrgctx, entry->data->data.sig, entry->info_type, mono_method_get_context (entry->method));
2998 case MONO_PATCH_INFO_GSHAREDVT_CALL: {
2999 MonoJumpInfoGSharedVtCall *call_info = g_malloc0 (sizeof (MonoJumpInfoGSharedVtCall)); //mono_domain_alloc0 (domain, sizeof (MonoJumpInfoGSharedVtCall));
3001 memcpy (call_info, entry->data->data.gsharedvt, sizeof (MonoJumpInfoGSharedVtCall));
3002 slot = mono_method_lookup_or_register_info (entry->method, entry->in_mrgctx, call_info, entry->info_type, mono_method_get_context (entry->method));
3005 case MONO_PATCH_INFO_GSHAREDVT_METHOD: {
3006 MonoGSharedVtMethodInfo *info;
3007 MonoGSharedVtMethodInfo *oinfo = entry->data->data.gsharedvt_method;
3010 /* Make a copy into the domain mempool */
3011 info = g_malloc0 (sizeof (MonoGSharedVtMethodInfo)); //mono_domain_alloc0 (domain, sizeof (MonoGSharedVtMethodInfo));
3012 info->method = oinfo->method;
3013 info->num_entries = oinfo->num_entries;
3014 info->entries = g_malloc0 (sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries);
3015 for (i = 0; i < oinfo->num_entries; ++i) {
3016 MonoRuntimeGenericContextInfoTemplate *otemplate = &oinfo->entries [i];
3017 MonoRuntimeGenericContextInfoTemplate *template = &info->entries [i];
3019 memcpy (template, otemplate, sizeof (MonoRuntimeGenericContextInfoTemplate));
3021 slot = mono_method_lookup_or_register_info (entry->method, entry->in_mrgctx, info, entry->info_type, mono_method_get_context (entry->method));
3024 case MONO_PATCH_INFO_VIRT_METHOD: {
3025 MonoJumpInfoVirtMethod *info;
3026 MonoJumpInfoVirtMethod *oinfo = entry->data->data.virt_method;
3028 info = g_malloc0 (sizeof (MonoJumpInfoVirtMethod));
3029 memcpy (info, oinfo, sizeof (MonoJumpInfoVirtMethod));
3030 slot = mono_method_lookup_or_register_info (entry->method, entry->in_mrgctx, info, entry->info_type, mono_method_get_context (entry->method));
3034 g_assert_not_reached ();
3041 #if defined(ENABLE_GSHAREDVT)
3043 #include "../../../mono-extensions/mono/mini/mini-generic-sharing-gsharedvt.c"
3048 mini_is_gsharedvt_type (MonoType *t)
3054 mini_is_gsharedvt_klass (MonoClass *klass)
3060 mini_is_gsharedvt_signature (MonoMethodSignature *sig)
3066 mini_is_gsharedvt_variable_type (MonoType *t)
3072 mini_is_gsharedvt_sharable_method (MonoMethod *method)
3078 mini_is_gsharedvt_variable_signature (MonoMethodSignature *sig)
3083 #endif /* !MONOTOUCH */